Environment variables defined in `toolchains.xml` are incorrect on ARM runners

[hfhbd]

Environment variables defined in `toolchains.xml` are incorrect on ARM runners

[bigdaz]

Thanks for your report. The reason for the hard-coded toolchains.xml file is to ensure that pre-installed JDKs are used when Gradle resolves a Java toolchain. Without this, Gradle will download a JDK even when the same one is already installed on the runner.

To support ARM equally, we need to choose between:

1. Removing this hard-coded list. Users will need to use setup-java (which adds to toolchains.xml) in order to benefit from pre-installed JDKs.
2. Add a separate hard-coded toolchains list for ARM.
3. Add the _arm equivalents to the hard-coded list, and validate against the actual environment, removing any that are unknown.

My preference would be for the 3rd option. Are you interested in submitting a PR for this?

[hfhbd]

Are you interested in submitting a PR for this?

Yes